Lamp-support and terminal for cloth-cutting machines.



I W. I. MARSHALL. LAMP SUPPORT AND TERMINAL FOR CLOTH CUTTING MACHINES.

APPLICATION FILED JAN. I6. I917.

Patented J une 19, 1917.

.wA-num. mm a 4.

UNITED STATES PATENT OFFICE: Y

WILLIAM MARSHALL, OF NEWARK, NEW JERSEY, ASSIGNQR TO H. MAIMIN 00., INC.,

A coRroRATIQN or NEW Your;

LAMP-SUPBQRT AND tan um. Eon eLern-currme MACHINES.

Sre ifiqatiqn of t r .?at nt- Patented J une 19, 1917.

Application filed January 16, 1917. Serial N 0. 142,638.

To all whom it may concern:

Be it known that I, lV LLIAu J. MAR- SHALL, a citizen of the United States, residing at and whose post-office address is 144 North Twelfth street, Newark, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Lamp-Supports and Terminals for Cloth- Cutting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to cloth cutting machines, and involves the provision of an improved detachable lamp mounting for such a machine.

Lamp mountings of the kind described are provided so that when the lamp support is positioned on the machine the lamp will be disposed to illuminate the field of operation of the cutter blade. It is already well known to arrange a lamp in this manner on a detachable lamp support, the lamp support carrying a plug member similar to the plug member of an ordinary plug and socket, and the machine having secured thereto a cooperant socket member, or vice versa; the member on the machine being connected to a suitable source of electric current and the member on the lamp support being wired to the lamp so that when the socket member is interengaged with the plug member the lamp is lighted by current flowing from such source.

The improved lamp mounting and circuit maker for the lamp provided by-the present invention comprises three cooperant elets- .One of these elements is secured-t the machine, another is secured to the lamp support, and the other is adapted to be wired to a source of electric current. The three elements are provided with Inlltually engaging parts, s posts or plug and reces es or sockets, so arranged that the three elements may be interengaged to fo m a threepart support and circuit maker, thereby to close a lighting circuit for the lamp including said source of current and at the same time to securely arrange the lamp in a selected disposition relative to the field of operation of the cutter blade of the machine. One of the important advantages of the new arrangement is that there "is no necessity of wiring the element on the machine to a suitable source of connecting the element to the of the machine. As a result, the manufacturing cost of the entire machine is lowered and the difficulties of wiring the machine are reduced. Another advantage of the particular embodiment disclosed is that the lamp is positioned above and somewhat behind the line of cut, as viewed by the operator, where it fully illuminates the line of cut but is out of the line of vision of the operator.

It is preferred to arrange the three elements so that when they are all interengaged to secure the lamp support in place on the machine, the element which is wired to the source of electric current may be disconnected from the other elements to open the lighting circuit for the lamp, without disturbing the mounting of the lamp support on the machine. This is preferably accomplished by providing, as the three elements, two socket members and a single plug member, the plug member being secured to the current as by motor circuit machine and one socket member being secured to the lamp support and the other ocket member ing d pted t be Wir d to a source of electric current. The several members are so constructed that the two socket members may be mounted on the posts or plugs of'the plug member in such a way that the member secured to the lamp support is interposed between the member fixed on the machine andthe member wired to the source of electric current.

The invention will be understood more clearly from the following description when taken in connection with the accompanying drawing illustrating the same, of which drawing Figure l is a side elevation of a cloth cutting machine of familiar construction, showing the lamp support positioned thereon; Fig. 2 is a vertical section, taken on the line 22 of Fig. l; and Fig. 3 is a top plan view of the motor casing and lamp support, certain hollow parts of such support being broken away and shown in section.

A block 4 of insulation is permanently secured in place on a shelf 5 forming a part of a lifting bracket 6. Two metallic posts or plugs 7 are set in this block 4: so as to project therefiTQm in the manner indicated, these posts being insulated from each other and from the screws which mount the block in place on the machine. The lamp support 5 secured thereto at the ball 10, the

is of accepted design and includes the usual column 9 and ball. 10, both made hollow to house the wires leading from the lamp. The lamp support has a block ll of insulation block 11 being provided with two transverse apertures or plug-receiving recesses 12 so arranged that the plugs 7 may be received in the apertures 12 and passed through the same to permit the block 11 to be fixed in place relative to the block 4 as shown. Metallic sleeves 13 are titted in the apertures 12 so that each sleeve will make good electric contact with one ot the plugs T when the latter are inserted in the apertures. The wires ll; from the lamp are soldered or otherwise suitably connected to the two sleeves 13 as indicated. The terminal portions of the posts or plugs 7 protrude beyond the block ll when the latter is mounted on the block 4- to properly position the lamp; these terminal portions ot' the plugs 7 being long enough to permit a socket member wired to a source oi electric current to be mounted on the plugs to close a lighting circuit for the lamp in a manner which will be readily understood, and, at the same time to aid in holding the lamp support in place. This socket member con.ventionally indicated in dot-and-dash lines at 15'; the plugs '7 being preferably of such length and these plugs and the recesses in the block 11 being so termed and arranged, that the socket memher indicated at 15 may, as is neterred, be the familiar snap-socket member of the wellknown commercial type of plug-and-socket the plug and socket members of which are shaped as fiat rectangular blocks.

It will be observed that the socket member 15, which is wired to the source of electric current intended to be interposed in the lighting circuit for the lamp, may be instantly snapped on or oil the plugs 7 to close or open such lighting circuit without distru'bing the block 11 relative to the block 1 and without any necessity of handling the comparatively unwieldy lamp support 8. 11', will be noted also that according to the present construction the metallic parts of neither the block 4c nor the block ll constitute a break in an electric circuit which may he accidentally bridged when the lamp support and member lo are detached from the machine or even when the socket member 15 only is detached from the machine. In other words, all of the metallic parts of each of the blocks 4 and l1 are electrically isolated so tar as a short circuit is concerned, until the three switch elements are all deliberately inter-engaged to hold the lamp support in place and to close the lighting circuit for the lamp on this lamp support.

Of course the arrangement disclosed is merely illustrative and it is particularly to be understood that the three or more elements employed in carrying out the invention may be variously conformed and may be provided with plugs or posts and cooperant apertures or recesses in any suitable 'ay, provided the objects and advantages of the invention are attained and the construction employed falls within the scope of the claims which follow.

I claim 1. In a cloth-cutting machine equipped with a detachable lamp support, a three-part lamp-supporting and circuit-making structure, of which one part is secured to the machine, another part is secured to the lamp support and has conducting portions connected to the lamp supplying terminals of the lamp support, and the third part has conducting portions adapted to be secured to a source of electric current, said structure including conducting plugs mechanically uniting the three parts to support the lamp on the machine and also electrically uniting the three parts to supply current to the lamp.

2. In a cloth cut-ting machine equipped with a detachable lamp support, three cooperant supporting and circuit making elements one of which is secured to the lamp support and is provided with recesses having walls of conducting material connected to the lamp supplying terminals of the lamp support, one of the two remaining elements being provided with recesses having walls of conducting material and the other being pro vided with projections formed of conducting material, one of the two last mentioned elements being adapted to have the conducting portion thereof connected to a source of electric current and the other of these two lastmentioned elements being secured to the machine, said recesses and projections being so arranged that the three elements may be interengaged to secure the lamp support in place on the machine and at the same time close a lighting circuit for the lamp including said conducting portions and such source of current.

3. In a cloth cutting machine equipped with a detachable lamp support, three cooperant supporting and circuit making elements one of which is secured to the lamp support and is provided with an aperture having a wall formed of conducting material wired to the lamp, another of which elements is secured to the machine and is provided with a projection formed of conducting material adapted to be passed through and protruded beyond the aperture in the member on the lamp support, and the third of which elements is provided with a recess for engaging with the protruded portion of said projection, the last-mentioned recess having a wall of conducting material adapted to be wired to a source of electric current.

4. In a cloth cutting machine equipped with a. detachable lamp support, a first blockof insulating material secured on the machine, a pair of projecting metallic posts set in the block so as to be insulated from each other and from the machine, and a second block of insulating material secured on the lamp support, this second block having a pair of transverse apertures so arranged that the posts may be passed through the apertures in the second block to mount the second block on the first block to arrange the lamp on the lamp support in a selected disposition relative to the field of operation of the machine, these transverse apertures being provided with metallic contacts wired to the lamp on the support and so arranged that when the second block is mounted on the first block the lamp is wired to the two posts, the posts being long enough to pass through and protrude beyond said apertures and being so spaced and conformed that the socket element of a standard plug-and-socket may be positioned on the protruding portions of the posts and thus connect the two posts to a source of electric current to close a lighting circuit for the lamp.

5. A detachable lamp mounting for a cloth cutting machine, comprising the combination of a multi-plug member secured to the machine, a cooper-ant socket member, and a third member adapted to be secured to the lamp support and provided with a plurality of transverse apertures through which may be passed the plugs of the plug member, these plugs being long enough to enter the socket member after being passed through the apertures in said third member.

6. A detachable lamp mounting for a cloth cutting machine, including a multiplug member, a cooperant socket member, and an auxiliary socket member adapted to be secured to the lamp support and provided with a plurality of transverse apertures through which may be passed the plugs of the plug member, these plugs being long enough to pass through said apertures in the auxiliary socket member and engage with the other socket member.

7 A lamp mounting for cloth cutting machines, comprising the combination of a plug member having a plurality of metallic posts and two socket members adapted to be positioned on the posts; one of said members being secured to the machine and another be ing adapted to be Wired to a source of elec tric current; and a lamp support to which the third member is secured.

S. In a cloth-cutting machine equipped with a detachable lamp support, a threepart lamp-supporting and circuit-making structure, of which one part is secured to the machine, another part is secured to the lamp support and has conducting portions connected to the lamp supplying terminals of the lamp support, and the third part has conducting portions adapted to be secured to a source of electric current, said structure including conducting plugs mechanically uniting the three parts to support the lamp on the machine and also electrically uniting the three parts to supply current to the lamp, the plugs being secured to one of the parts and the two other parts having sockets receiving the plugs to mount the three parts in line, with the part secured to the lamp support between the other two parts, whereby the part adapted to be wired to the current source may be readily detached to open the lamp supplying circuit without disturbing the mounting of the lamp on the machine.

In testimony whereof I alfix my signature.

l/VILLIAM J. MARSHALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

